CN220305003U

CN220305003U - Resiliometer pointer and resiliometer

Info

Publication number: CN220305003U
Application number: CN202323101088.XU
Authority: CN
Inventors: 李慎东; 李慎波
Original assignee: Golden Key Construction Co ltd
Current assignee: Golden Key Construction Co ltd
Priority date: 2023-11-17
Filing date: 2023-11-17
Publication date: 2024-01-05
Anticipated expiration: 2033-11-17

Abstract

The utility model relates to the technical field of concrete strength measurement, in particular to a resiliometer pointer and a resiliometer, wherein the resiliometer pointer comprises a sliding block and a pointer sheet, an indication line is arranged on the front surface of the sliding block, the pointer sheet is arranged on the back surface of the sliding block, a sliding hole for a pointer shaft to pass through is arranged on the sliding block, the resiliometer pointer further comprises a friction force adjusting device, the friction force adjusting device comprises annular elastic rings and tightening screws, grooves are symmetrically arranged on the left side and the right side of the sliding hole, threaded holes communicated with the outside are arranged on the bottom surface of each groove, one annular elastic ring is arranged in each groove, the tightening screws are positioned in the threaded holes, and the front ends of the tightening screws are in contact with the annular elastic rings. A resiliometer employs the resiliometer pointer of the present utility model. The utility model can quickly adjust the friction force between the sliding block and the pointer shaft.

Description

Resiliometer pointer and resiliometer

Technical Field

The utility model relates to the technical field of concrete strength measurement, in particular to a resiliometer pointer and a resiliometer.

Background

At present, a rebound instrument is generally adopted for measuring the strength of concrete, and the rebound instrument has the advantages of flexibility, convenience and low price, and is a preferred nondestructive testing instrument for field use. The friction between the slider of the resiliometer pointer and the pointer shaft is generally stabilized between 0.6 and 0.7N, and if the friction is too large or too small, the measured value is inaccurate. When the measured value is not right, the friction force between the sliding block and the pointer shaft is adjusted by adjusting the clamping force of the elastic pieces symmetrically arranged on the sliding block to the pointer shaft, and the elastic pieces are pressed by hands to clamp the pointer shaft during adjustment, or the elastic pieces are outwards supported by a thin rod, so that the clamping force between the elastic pieces and the pointer shaft is reduced. The adjustment method can meet the requirement only by multiple times of adjustment of the tolerance of operators, and is inconvenient to operate.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a resiliometer pointer and a resiliometer, wherein the resiliometer pointer and the resiliometer can quickly adjust the friction force between a sliding block and a pointer shaft.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a resiliometer pointer, it includes slider and pointer piece, the front of slider sets up the pilot line, and the back of slider sets up the pointer piece, set up the slide hole that supplies the pointer axle to pass on the slider, it still includes friction force adjusting device, friction force adjusting device includes annular spring ring and top tight screw the left and right sides symmetry of slide hole sets up the recess, every the recess bottom surface sets up the screw hole with outside intercommunication, set up one in the recess annular spring ring, top tight screw is located threaded hole, and top tight screw's front end and annular spring ring contact.

Further, the surface of the sliding block is provided with annular scale marks concentric with the threaded holes.

Furthermore, a straight groove is formed in the back face of the jacking screw.

The utility model also relates to a resiliometer which adopts the resiliometer pointer. Further, the rear fixing portion of the pointer shaft comprises two half body blocks with arc grooves, butt joint threaded holes are formed in the two half body blocks, one half body block is fixed to a shell of the resiliometer, and through holes corresponding to the butt joint threaded holes are formed in the shell of the resiliometer.

The beneficial effects of the utility model are as follows:

the resiliometer can utilize the contact deformation of the ejection screw to the annular elastic ring to realize the pressure adjustment of the annular elastic ring to the pointer shaft, thereby realizing the adjustment of friction force, being convenient to adjust and having controllable adjusting force.

The rear fixing part of the pointer shaft can be detached through the two half blocks, and when the rebound instrument pointer is installed, the rebound instrument pointer can be sleeved on the pointer shaft and then the pointer shaft is fixed, so that the installation efficiency is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a portion of the structure of a rebound apparatus of the present utility model;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic perspective view of a resiliometer pointer of the present utility model;

FIG. 4 is a schematic cross-sectional view of the resiliometer pointer of the present utility model sleeved on a pointer shaft;

FIG. 5 is a schematic view of an annular spring ring of the present utility model;

in the figure, 1, a sliding block; 11. an indication line; 12. a slide hole; 13. a groove; 14. a threaded hole; 15. annular graduation marks; 2. pointer sheet; 3. a pointer shaft; 4. an annular elastic ring; 5. tightly pushing the screw; 6. half block I; 7. half block II; 8. a housing; 81. a T-shaped hole; 9. and (5) a bolt.

Detailed Description

Specific embodiments of the present utility model are described in detail below with reference to fig. 1-5:

for more visual illustration, the half block i 6 and the half block ii 7 in fig. 2 are not cut away.

First, the resiliometer pointer of the present utility model is described.

The resiliometer pointer comprises a sliding block 1 and a pointer sheet 2, wherein an indication line 11 is arranged on the front surface of the sliding block 1, and the indication line 11 is matched with a graduated scale to indicate a rebound numerical value. The back of the sliding block 1 is provided with a pointer sheet 2, and the pointer sheet 2 and the elastic hammer are matched to realize the sliding of the sliding block 1. The slide block 1 is provided with a slide hole 12 for the pointer shaft 3 to pass through. The above structure and the matching relationship are the prior art and are not described herein.

The sliding block 1 is provided with a friction force adjusting device, as shown in fig. 4, the friction force adjusting device comprises an annular elastic ring 4 and a jacking screw 5, and the annular elastic ring 4 can be made of an elastic metal sheet or an elastic composite material. Grooves 13 are symmetrically formed in the left side and the right side of the sliding hole 12, threaded holes 14 communicated with the outside are formed in the bottom surface of each groove 13, one annular elastic ring 4 is arranged in each groove 13, the jacking screw 5 is located in each threaded hole 14, and the front end of the jacking screw 5 is in contact with the annular elastic ring 4. In order to prevent the annular spring ring 4 from falling easily during installation, a ring of inwardly extending baffles can be arranged at the opening edge of the groove 13, which limits the annular spring ring 4 in the groove 13.

In order to give the operator a more visual sense of the extent of screwing when adjusting the tightening screw 5, an annular graduation line 15 concentric with the threaded hole 14 is provided on the surface of the slide 1. The back of the jacking screw 5 is provided with a straight groove, and a straight screwdriver is used for screwing in the process of use. The in-line grooves may also be used as indicator lines for the annular graduation marks 15.

Next, the resiliometer of the present utility model is described.

The first embodiment of the resiliometer of the present utility model adopts the resiliometer pointer described above, and other parts of the resiliometer are the same as those of the existing resiliometer, and will not be described here again.

Second embodiment of the resiliometer of the utility model: since the annular elastic ring 4 located in the groove 13 is easily dropped at the time of installation, the present embodiment modifies the fixing portion of the existing pointer shaft 3 on the basis of the first embodiment as follows: the rear fixing part of the pointer shaft 3 comprises two half blocks with arc-shaped grooves, and the arc-shaped grooves on the two half blocks are just wrapped around the pointer shaft 3 after being butted. The half body piece includes half body piece I6 and half body piece II 7, is provided with the butt joint screw hole on half body piece I6 and the half body piece II 7, be provided with the through-hole that corresponds with the butt joint screw hole on the casing 8 of resiliometer, preferably, the through-hole adopts T type hole 81. One of the half-blocks i 6 is fixed to the housing 8 of the resiliometer. Of course, the butt threaded hole on the half block I6 can also be a common through hole without internal threads. And the two parts are fixedly connected through bolts 9 during installation.

While the foregoing text and drawings illustrate and describe embodiments of the utility model, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a resiliometer pointer, it includes slider and pointer piece, the front of slider sets up the pilot line, and the back of slider sets up the pointer piece, set up the slide hole that supplies the pointer axle to pass on the slider, its characterized in that: the friction force adjusting device comprises an annular elastic ring and a jacking screw, grooves are symmetrically formed in the left side and the right side of the sliding hole, threaded holes communicated with the outside are formed in the bottom surface of each groove, one annular elastic ring is arranged in each groove, the jacking screw is located in each threaded hole, and the front end of the jacking screw is in contact with the annular elastic ring.

2. A resiliometer pointer according to claim 1, wherein the surface of the slider is provided with an annular graduation mark concentric with the threaded hole.

3. The resiliometer pointer of claim 2, wherein the back of the tightening screw is provided with a straight groove.

4. A resiliometer employing a resiliometer pointer as claimed in any one of claims 1 to 3.

5. A resiliometer according to claim 4, wherein the rear fixing part of the pointer shaft comprises two half blocks with arc grooves, butt threaded holes are formed in the two half blocks, one half block is fixed on a housing of the resiliometer, and through holes corresponding to the butt threaded holes are formed in the housing of the resiliometer.